THESSALONIKI, Greece — Judicial authorities in northern Greece say an investigative journalist for Dutch television has been released from custody after appearing in court for entering a restricted military area without permission.

Court officials said reporter Sakir Khader was handed a suspended five-month prison sentence Tuesday — a day after his arrest — for entering the area on the Turkish border. Three others were arrested in the same incident, a German citizen and two Iraqis who have been granted asylum status in Germany. They were also given the same sentences and released.

The region has seen a spike in migrant trafficking in recent months.

Khader works for the current affairs show Brandpunt at the Dutch national broadcaster KRO-NCRV. Station officials could not be reached for comment.